<template>
  <div class="login_container">
      <div class="login_box">
          <!-- 头像 -->
          <div class="avatar_box">
              <img src="../assets/logo.png" alt="">
          </div>
          <!-- 登录表单区域 -->
          <el-form label-width="0px" ref="loginFormRef" :rules="loginRules" :model="loginForm" class="login_form">
              <!-- 用户名 -->
            <el-form-item prop="username">
                <el-input v-model="loginForm.username" prefix-icon="el-icon-s-custom"></el-input>
            </el-form-item>
            <!-- 密码 -->
            <el-form-item prop="password">
                <el-input v-model="loginForm.password" type="password" prefix-icon="el-icon-lock"></el-input>
            </el-form-item>
            <!-- 按钮区域 -->
            <el-form-item class="btns">
                <el-button type="primary" @click="login">登录</el-button>
                <el-button type="info" @click="resetLoginForm">重置</el-button>
            </el-form-item>
          </el-form>
      </div>
  </div>
</template>

<script>
export default {
    name: 'Login',
    data() {
        return{
            // 登录表单数据绑定对象
            loginForm:{
                username: 'admin',
                password: '123456'
            },
            // 登录表单验证规则
            loginRules:{
                // 验证用户名
                username:[
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 2, max: 16, message: '长度在 2 到 16 个字符', trigger: 'blur' }
                ],
                // 验证密码
                password:[
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 18, message: '长度在 6 到 18 个字符', trigger: 'blur' }
                ]
            }
        }
    },
    methods:{
        resetLoginForm(){
            this.$refs.loginFormRef.resetFields()
        },
        login(){
            this.$refs.loginFormRef.validate(async (valid)=>{
                // console.log(valid);
                if (!valid) return;
                const {data: res} = await this.$http.post('login',this.loginForm)
                if(res.meta.status !== 200) return this.$message.error('登录失败');
                this.$message.success('登录成功');
                window.sessionStorage.setItem('token', res.data.token);
                this.$router.push('/home')
            })
        }
    }
    
}
</script>

<style scoped>
    .login_container{
        background-color: #2b4b6b;
        height: 100%;
    }
    .login_box{
        width: 450px;
        height: 300px;
        background-color: #fff;
        border-radius: 3px;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
    }
    .avatar_box{
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%, -50%);
        background-color: #fff;
    }
    img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
    }
    .login_form{
        position: absolute;
        bottom: 0;
        width: 100%;
        padding: 0 20px;
        box-sizing: border-box;
    }
    .btns{
        display: flex;
        justify-content: flex-end;
    }
</style>